Re:Timelock Encryption made possible and easy to use
by xhrpost on Monday August 15, 2022 @11:46PM
(#32478991)
I wonder if there's a way to beam the key out into space with RF at a very distant, but RF-reflective, object. The key hits the object and bounces back and cannot be received until it reaches earth again. I'm not sure such a set-up is physically possible but I think it would be a truly timelocked situation.
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Re:Timelock Encryption made possible and easy to use
by ale42 on Tuesday August 16, 2022 @05:50AM
(#32480908)
Except if someone can sniff your outgoing RF... given that the power reflected back from the very distant object would have a gigantic attenuation (just the path to the moon has ~250 dB attenuation), you would have to use an enormous RF output power. But at this point, anyone close enough to the transmitter (even if you use highly directional antenna) could basically sniff the key being transmitted.
Re:Timelock Encryption made possible and easy to use
by anomalroil on Tuesday August 16, 2022 @02:29AM
(#32479783)
That would be a pretty cool way of achieving timelock, sure, but might not be super practical.